查询词典 extraction

This article makes a study of the effects of six different solvents on lacquer wax extraction of the Japanese Rhus succedanea,concerning the rate of extraction,the albedo value,melting point and chemical characteristics.

研究6种不同溶剂对日本野漆蜡的萃取率、白度值、熔点和化学特征值的影响。结果表明，溶剂种类对日本野漆蜡萃取率和白度值具显著性影响，但对熔点和化学特征值影响较小。试验得出石油醚(30~60℃)是漆蜡萃取的最佳溶剂，浸提温度低，时间短，漆蜡萃取率高，产品白度值高、色泽好，操作过程安全

Most conventional methods for the extraction of substrate network were based on the use of frequency behavior of Y22 + Y21. However, we found that the feedback signal through the internal circuit elements makes the conductance of the substrate network underestimated while makes the susceptance of the substrate network overestimated. If conventional methods are directly performed on large area SiGe HBTs, a negative effective substrate resistance will be extracted. In the first part of the thesis, a new extraction method for the substrate network parameters of SiGe HBTs is proposed. When extracting the substrate network parameters, the feedback signal through internal circuit elements is considered. All the circuit elements of substrate network are extracted from Ysub instead of Y22 + Y21. The extracted substrate network parameters show a different bias dependence as compared to the conventional methods. By using a simple n+-p junction, we successfully explained the extracted bias dependent substrate network parameters. We developed a series linear regression equation to extracted the intrinsic circuit elements from the ABCD parameters. Compared with the conventional methods which extracted the circuit elements from Y-parameters or Z-parameters, the proposed method is much simple and easy to implement in the computer programs.

传统方法在萃取基板网路参数时，常常由所量得的Y22 + Y21来著手，但我们的研究发现，利用Y22 + Y21的频率关系来萃取基板参数时，基板网路的电导会被低估而基板网路的电纳则会被高估，另外传统基板网路参数萃取方法在萃取大尺寸元件基板网路参数时会得到负值基板等效电阻，以上的非理想效应皆因忽略部份信号会经由本质参数对基板网路做回授的影响，因此本论文中提出一个新的基板网路参数萃取方法，在萃取基板网路参数时考虑了由本质参数所回授的信号，并且由Ysub而非Y22 + Y21萃取基板等效电阻、基板等效电容及基板与集极空乏电容，成功的解决上述的一些非理想效应，所得到的基板网路参数与集极偏压的关系与传统方法所得的趋势相异，经由一个简单的模型成功的解释了所萃取得到的基板网路参数与偏压的关系，在萃取本质参数时，我们舍弃传统萃取方法中常用的Y参数或Z参数萃取方程式，而改用ABCD参数，并提出一系列的线性回归方程式，萃取所有的本质参数，与传统方法比较起来，比较简单而且容易建立在使用者的参数萃取软体中。

The effects of ratio of solid to liquid, salt concentration, flocculation method on leaf protein extraction rate and protein extraction rate in Symphytum pezegrinum L. were studied.

以紫花聚合草为材料，研究固液比、盐浓度、凝絮方法对叶蛋白提取率和蛋白质提取率的影响。

Supercritical carbon dioxide extraction of lutein ester from marigold(Tagetes erect L.)with continuous co-solvent ;2. This paper reviews comprehensively the machinary and methods of co-solvent added in the supercritical CO2 for extraction of natural products.

综述了夹带剂在超临界CO2萃取天然产物中的作用机理、使用方法、夹带剂的种类，以及夹带剂在提取生物碱、酚酸、皂苷、黄酮、脂肪酸等天然产物中的应用。

Parameters for extraction of polyphenols from pu"er teaThe influence of temperature, heating time, ratio of tea to solvent, con centration and pH value of solvent on extraction rate of pu"er tea polyphenols were studied.

1普洱茶多酚浸提条件的优化以普洱茶为原料，研究浸提温度、浸提时间、料液比、溶剂浓度对普洱茶多酚提取率的影响。

To enhance the utilization of raw materials and Tenebrio molitor protein extraction rate, selection of these two enzymes for the enzyme extraction.

为提高原料利用率和黄粉虫蛋白提取率，选择这两种酶为提取用酶。

In short, this paper two methods of protein extraction studies, the initial establishment of the Tenebrio molitor protein extraction methods and the best technology, the development of Tenebrio molitor for the future of protein resources to provide a theoretical basis.

总之，本论文通过两种蛋白质提取方法的比较研究，初步确立了黄粉虫中蛋白质的最佳提取方法和工艺，为以后开发黄粉虫蛋白质资源提供了理论基础。

Temperature and 30 mL CO:. Under this condition, the highest ratio of rotenone can meet 0.359% counted with engineering calculation. For total compounds extraction. 6000psi. 70癈. 40mL and the ratio is 10.06%. For rotenone content in total compounds. 3000psi. 35 癈. lOmL and the high content percent is 7.59%. So when conducting SC-CO: extraction of Tephrosia vogelii.

非洲山毛豆的SC-CO_2萃取应根据萃取目的选用相应的工艺条件SC-CO_2萃取非洲山毛豆生产杀虫剂，应选用压力5000psi，温度45℃，流量30mL的工艺条件；(5)通过夹带剂对萃取效果的影响研究，结果表明加入夹带剂可显著影响非洲山毛豆的SC-CO_2萃取效果。

The effects of four different solutions (methanol, ethanol, chloroform, and tetrachloromethane) for the extraction of paeonol were investigated. With the consideration of toxicity, extraction ratio, and the influence on separation, methanol was selected as extractant.

考察了甲醇、乙醇、氯仿、四氯化碳4种溶剂提取丹皮酚的效果，综合考虑提取剂毒性、提取率和对分离的影响，选择甲醇作提取剂。

Solvent Extraction method was applied to separate trace tin and trace germanium, which tributyl phosphate and tetrachloromethane became a kind of extractant, using counter synergistic extraction, and inorganic salt was used as salting-out.

主要是采用液-液萃取法，用磷酸三丁酯与四氯化碳作为混合萃取剂，利用反协同萃取，并加入无机盐作为盐析剂对微量锡与微量锗进行分离富集。

If you were not , and OS X just booted normally, have no fear.

如果你没有，和OS X刚刚启动通常，没有恐惧。

I only want to preserve our all .

我只想保存好我们的一切